[vortex] Sorry to trouble you, I wonder if you could help me.

Tue Apr 16 23:52:01 2002

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Hi,
I have some problems about ethernet  diagnostic.I have tried to look for the
information
about them, but the information are very limited. So I am still puzzled and
have no solution.
1) what are MAC loopback and PHY loopback?
2) I know that remote loopback can check PHY/MAC level loop back for each
layer health. But how to do remote loopback?
   Wish you can give me some experience and documents about them.
   Thank you very much.
Best regards.
Biwu.xie

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<body lang=3DZH-CN link=3Dblue vlink=3Dpurple =
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<div class=3DSection1>

<p class=3DMsoNormal><font size=3D4 color=3Dblack =
face=3D=A7=BA=CA^><span lang=3DEN-US
style=3D'font-size:14.0pt;font-family:SimSun;color:black;mso-fareast-lan=
guage:
ZH-CN'>Hi,<o:p></o:p></span></font></p>

<p class=3DMsoNormal style=3D'text-indent:21.0pt'><font size=3D4 =
color=3Dblack face=3D=A7=BA=CA^><span
lang=3DEN-US =
style=3D'font-size:14.0pt;font-family:SimSun;mso-bidi-font-family:
Arial;color:black;mso-fareast-language:ZH-CN'>I have some problems =
about
ethernet<span style=3D'mso-spacerun:yes'>&nbsp; </span>diagnostic.I =
have tried to
look for the information<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D4 color=3Dblack =
face=3D=A7=BA=CA^><span lang=3DEN-US
style=3D'font-size:14.0pt;font-family:SimSun;mso-bidi-font-family:Arial;=

color:black;mso-fareast-language:ZH-CN'>about them, but the information =
are
very limited. So I am still puzzled and have no =
solution.<o:p></o:p>

<p class=3DMsoNormal><b style=3D'mso-bidi-font-weight:normal'><i =
style=3D'mso-bidi-font-style:
normal'><font size=3D4 color=3Dblack face=3D=A7=BA=CA^><span =
lang=3DEN-US style=3D'font-size:
14.0pt;font-family:SimSun;mso-bidi-font-family:Arial;color:black;mso-far=
east-language:
ZH-CN;font-weight:bold;mso-bidi-font-weight:normal;font-style:italic;
mso-bidi-font-style:normal'>1) what are MAC loopback and PHY =
loopback?<o:p></o:p></span></font></i></b></p>

<span
lang=3DEN-US =
style=3D'font-size:14.0pt;font-family:SimSun;mso-bidi-font-family:
Arial;color:black;mso-fareast-language:ZH-CN;font-weight:bold;mso-bidi-f=
ont-weight:
normal;font-style:italic;mso-bidi-font-style:normal'>2) I know that =
remote loopback can check PHY/MAC level loop =
back
for each layer health. But how to do remote =
loopback?<o:p></o:p>

<p class=3DMsoNormal =
style=3D'mso-pagination:none;mso-layout-grid-align:none;
text-autospace:none'><font size=3D4 color=3Dblack =
face=3D=A7=BA=CA^><span lang=3DEN-US
style=3D'font-size:14.0pt;font-family:SimSun;mso-bidi-font-family:Arial;=

color:black;mso-fareast-language:ZH-CN;mso-bidi-font-weight:bold'><span
style=3D'mso-tab-count:1'>&nbsp;&nbsp; </span>Wish you can give me some =
</span></font><font
size=3D4 color=3Dblack face=3D=A7=BA=CA^><span lang=3DEN-US =
style=3D'font-size:14.0pt;font-family:
SimSun;mso-bidi-font-family:Arial;color:black;mso-fareast-language:ZH-CN=
'>experience
and </span></font><font size=3D4 color=3Dblack face=3D=A7=BA=CA^><span =
lang=3DEN-US
style=3D'font-size:14.0pt;font-family:SimSun;color:black'>document</span=
></font><font
size=3D4 color=3Dblack face=3D=A7=BA=CA^><span lang=3DEN-US =
style=3D'font-size:14.0pt;font-family:
SimSun;color:black;mso-fareast-language:ZH-CN'>s about =
them.<o:p></o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-pagination:none;mso-layout-grid-align:none;
text-autospace:none'><font size=3D4 color=3Dblack =
face=3D=A7=BA=CA^><span lang=3DEN-US
style=3D'font-size:14.0pt;font-family:SimSun;color:black;mso-fareast-lan=
guage:
ZH-CN'><span style=3D'mso-tab-count:1'>&nbsp;&nbsp; </span>Thank you =
very much.<o:p></o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-pagination:none;mso-layout-grid-align:none;
text-autospace:none'><font size=3D4 color=3Dblack =
face=3D=A7=BA=CA^><span lang=3DEN-US
style=3D'font-size:14.0pt;font-family:SimSun;color:black;mso-fareast-lan=
guage:
ZH-CN'>Best regards.<o:p></o:p></span></font></p>

<p class=3DMsoNormal =
style=3D'mso-pagination:none;mso-layout-grid-align:none;
text-autospace:none'><font size=3D4 color=3Dblack =
face=3D=A7=BA=CA^><span lang=3DEN-US
style=3D'font-size:14.0pt;font-family:SimSun;color:black;mso-fareast-lan=
guage:
ZH-CN'>Biwu.xie</span></font><font size=3D4 color=3Dblack =
face=3D=A7=BA=CA^><span lang=3DEN-US
style=3D'font-size:14.0pt;font-family:SimSun;mso-bidi-font-family:Arial;=

color:black;mso-fareast-language:ZH-CN'><o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso=
-fareast-font-family:
SimSun;color:navy;mso-fareast-language:ZH-CN'><span
style=3D'mso-spacerun:yes'>&nbsp;</span><o:p></o:p></span></font></p>

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